CN109440874B - Step pump station regulation pond system based on water balance - Google Patents

Step pump station regulation pond system based on water balance Download PDF

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CN109440874B
CN109440874B CN201811392765.9A CN201811392765A CN109440874B CN 109440874 B CN109440874 B CN 109440874B CN 201811392765 A CN201811392765 A CN 201811392765A CN 109440874 B CN109440874 B CN 109440874B
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water
lifting
farmland
irrigation
pipelines
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CN109440874A (en
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徐存东
连海东
张宏洋
张茂林
王喆
朱兴林
李振
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North China University of Water Resources and Electric Power
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North China University of Water Resources and Electric Power
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    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B11/00Arrangements or adaptations of tanks for water supply
    • E03B11/10Arrangements or adaptations of tanks for water supply for public or like main water supply
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B13/00Irrigation ditches, i.e. gravity flow, open channel water distribution systems
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00Methods or layout of installations for water supply
    • E03B1/02Methods or layout of installations for water supply for public or like main supply for industrial use
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B5/00Use of pumping plants or installations; Layouts thereof
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00Water main or service pipe systems
    • E03B7/07Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
    • E03B7/078Combined units with different devices; Arrangement of different devices with respect to each other
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00Water main or service pipe systems
    • E03B7/09Component parts or accessories

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Pipeline Systems (AREA)
  • Sewage (AREA)

Abstract

The invention relates to the technical field of agricultural irrigation and urban water supply, in particular to a cascade pump station regulation and storage pool system based on water balance, which comprises two parallel water lifting pipelines and multistage cascade pump stations arranged at intervals, wherein the two water lifting pipelines jointly pass through each stage of cascade pump station to form two parallel water lifting lines, the two water lifting pipelines are respectively provided with a water feeding valve for controlling the opening and the closing of the water lifting pipelines, at least one water lifting pipeline is opened, the water lifting pipeline is communicated with the farmland through an open channel to provide a first irrigation water channel, a regulating and storing water pool is also arranged between two adjacent step pump stations, the water inlet end of the regulating and storing water pool is communicated with the water lifting pipeline, the water outlet end of the regulating and storing water pool is communicated with the farmland to provide a second irrigation water channel, this system is supplied water by two water supply lines, can adjust the water lift according to actual conditions to set up the regulation pond between the pump stations at different levels, accessible regulation pond carries out the supply to agricultural irrigation water in dry season.

Description

Step pump station regulation pond system based on water balance
Technical Field
The invention relates to the technical field of agricultural irrigation and urban water supply, in particular to a cascade pump station regulating and storing water tank system based on water balance.
Background
The step pump station water delivery system comprises equipment such as pump stations (water pumping devices, motors, other auxiliary devices and the like), water distribution ports, channels and the like, and reasonable allocation of water resources is realized through modes of pumping water by the pump stations and pipeline water delivery.
At present, the cascade pump station is widely applied to the aspects of agricultural irrigation, urban water supply and the like, and plays an important role in the cascade pump station in northwest arid regions. Due to the weather conditions of high evaporation and low rainfall in northwest areas, crops have the characteristics of large water demand and long irrigation period, the phenomenon that the water supply amount and the water demand amount are not matched often occurs in a pumping station pumping irrigation system, the pumping station water lifting amount is larger than the water consumption amount of agricultural irrigation and urban water supply in a water filling period, and water waste is caused, and in a dry period, the pumping station water lifting amount is not enough for the water consumption amount of agricultural irrigation and urban water supply, meanwhile, the water consumption amount of urban water in the night is far smaller than the water consumption amount of urban water in the daytime, and the water supply of the pumping station is wasted, so that imbalance exists between the pumping station water lifting amount and the actual water.
Disclosure of Invention
Aiming at the defects and problems in the prior art, the invention provides a step pump station regulating and storing water pool system based on water balance, the system supplies water through two water supply lines, the water supply amount can be regulated according to the actual condition, a regulating and storing water pool is arranged between each stage of pump station, and agricultural irrigation water can be supplied through the regulating and storing water pool in the dry period.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a step pump station regulation pond system based on water balance which characterized in that: including the step pump station that the water lift pipeline and multistage interval of two parallels set up, two water lift pipelines form two parallel water lift circuits through step pump stations at all levels jointly, and water in the water lift pipeline is taken out to the high water level by low water level through step pump stations at all levels, installs the last water valve of control water lift pipeline switching on two water lift pipelines respectively, the water lift pipeline has at least one to open, the water lift pipeline provides first irrigation water route through open channel and farmland intercommunication, still is provided with the regulation pond between two adjacent step pump stations, the water inlet end and the water lift circuit intercommunication in regulation pond, the water outlet end and the farmland intercommunication in regulation pond provide the second and irrigate the water route, install the retaining valve respectively at the water inlet end and the water outlet end in regulation pond.
Foretell step pump station regulation pond system based on water balance, the pressure pipe of carrying water pipeline for two parallels through pump stations at different levels in proper order, it has a plurality of rivers exports to open on the pressure pipe, regulation pond is intake end, open channel and is intake the end and communicate with the pressure pipe through the rivers export that corresponds respectively.
Foretell step pump station regulation pond system based on water balance, the delivery end in regulation pond communicates with a plurality of farmland through a plurality of tributaries respectively, the open channel communicates with a plurality of farmland respectively through a plurality of tributaries.
Foretell step pump station regulation pond system based on water balance, the relief of open channel reduces along the rivers direction gradually.
The step pump station regulation and storage pool system based on water balance is characterized in that the terrain of the pressure pipe is higher than that of a regulation and storage pool on the same water flow path.
A water storage adjusting method of a step pump station regulation water pool system is characterized in that pump stations are respectively arranged on two parallel water lifting pipelines at different elevation positions to form a plurality of step pump stations, a water storage water inlet, an open channel water inlet and corresponding electromagnetic valves are respectively arranged on the water lifting pipelines between adjacent step pump stations, the water storage water inlet is communicated with a reservoir at the same level through pipelines, the reservoir at the same level is guided to a farmland at the same level through pipelines, and a water source is guided to the farmland at the same level through the open channel water inlet; the topmost ends of the two parallel water lifting pipelines are communicated with the domestic water storage equipment; the method comprises the following steps that firstly, the water storage capacity of domestic water at lifting terminals of two parallel water lifting pipelines is met, a water storage device of the domestic water is provided with a full water warning line A, a high water level warning line B and a low water level warning line C, corresponding water level sensors are installed, water injection to the water storage device is stopped when the water level of the water storage device is above the line A, one or two water lifting pipelines are started to inject water to the water storage device at night when the lines AB are located, water injection is stopped in the daytime when the lines AB are located, two water lifting pipelines are started to inject water to the water storage device at night when the lines BC are located, one or two water lifting pipelines are started to inject water to the water storage device at daytime when the lines BC are located, and two water lifting pipelines are started to inject water; under the condition that satisfies domestic water storage capacity, irrigate through the open channel at night to the cistern water injection at the same stage, stop on daytime to the cistern water injection at the same stage, nevertheless utilize the cistern at the same stage to irrigate to the farmland, utilize the open channel cooperation to irrigate when irrigating inadequately.
The invention has the beneficial effects that: according to the step pump station regulating and storing water pool system based on water balance, water is supplied by two parallel water supply lines, the two water supply lines can be simultaneously opened or only one of the two water supply lines is opened, city water is much in daytime, farmland evaporation is fast, and the step pump station regulating and storing water pool system belongs to a water peak period, the two water supply lines are simultaneously opened, one water supply line is opened when water consumption is reduced at night in a water low peak period, energy is saved, reasonable utilization of water resources is realized, redundant electric energy at night is fully utilized, and cost is reduced; according to the invention, the regulating and storing water pool is arranged between each stage of pump station, and when the water lifting amount of the step pump station cannot meet the requirement of agricultural irrigation, agricultural irrigation can be supplied through the regulating and storing water pool between each stage of pump station. In the heavy water period, the redundant water lifting amount of the cascade pump station is stored in a regulating and storing water pool, and in the dry water period, when the agricultural irrigation or the urban water supply is insufficient, the water is supplied through the regulating and storing water pool; the invention has low technical requirement and high engineering applicability, the regulation and storage water pool is established among the pump stations, the optimized scheduling of the cascade pump station system can be promoted, when more water flows, the water storage effect is achieved, the water loss is reduced, agricultural irrigation or urban water supply is supplemented in a dry period, the cyclic utilization of water resources is enhanced, and the economic benefit is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the overall structure of the present invention.
In the figure: 1-a first water lifting pipeline, 2-a second water lifting pipeline, 3-a step pump station, 41-a first regulation and storage water tank, 42-a second regulation and storage water tank, 51-a farmland, 52-a farmland, 53-a third farmland, 61-a first open channel, 62-a second open channel, 7-branch pipes and 8-branch open channels.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example 1: a cascade pump station regulation and storage water pool system based on water balance is shown in figure 1 and comprises two parallel water lifting pipelines and multistage cascade pump stations 3 arranged at intervals, wherein the two water lifting pipelines jointly pass through all stages of cascade pump stations 3 to form two parallel water lifting lines, water is pumped from low water level to high water level through all stages of cascade pump stations, the two water lifting pipelines are respectively a first water lifting pipeline 1 and a second water lifting pipeline 2, water feeding valves for controlling the opening and closing of the water lifting pipelines are respectively arranged on the first water lifting pipeline 1 and the second water lifting pipeline 2, the start and stop of the corresponding water lifting pipeline are controlled by the water feeding valve, the first water lifting pipeline 1 and the second water lifting pipeline 2 are simultaneously opened or only one of the first water lifting pipeline and the second water lifting pipeline is opened, the first water lifting pipeline 1 is communicated with the first farmland 51 through the first open channel 61, a first irrigation water channel is provided for the first farmland 51, and irrigation water is always provided for the first farmland 51; the second water lifting pipeline 2 is communicated with the second farmland 52 through a second open channel 62, provides a first irrigation waterway for the second farmland 52 and provides irrigation water for the second farmland 52 all the time. Meanwhile, a regulation and storage water tank is also arranged between two adjacent step pump stations 3, the water inlet end of the first regulation and storage water tank 41 is communicated with the first water lifting line 1, the water outlet end of the first regulation and storage water tank 41 is communicated with the first farmland 51 to provide a second irrigation water channel for the first farmland, and the second irrigation water channel intermittently provides irrigation water for the first farmland 51; the end of intaking of No. two regulation ponds 42 and the 2 intercommunications of second water lift circuit, the play water end and No. two farmlands 52 intercommunications of No. two regulation ponds 42 provide the second for No. two farmlands and irrigate the water route, and second irrigation water route intermittent type nature provides irrigation water for No. two farmlands 52 to end and play water end installing the retaining valve respectively intaking in the regulation pond, control the regulation pond through controlling the retaining valve and whether supply water for the farmland.
The water lifting pipeline is a pressure pipe which sequentially passes through two parallels of each stage of pump station, a plurality of water outlets are formed in the pressure pipe, and the water inlet end of each regulation pool and the water inlet end of the open channel are respectively communicated with the pressure pipe through the corresponding water outlets. The relief of each open channel reduces along the rivers direction of self gradually, make rivers flow in the canal with the help of self gravitational potential energy, and on same rivers way, the relief of the pressure pipe that corresponds is higher than the relief in regulation pond is higher than the relief in farmland, water is in the lower regulation pond of opening part flow direction relief of the higher pressure pipe in relief, open the retaining valve in regulation pond and make rivers go into the farmland that the relief is minimum when need irrigate at last, need not be with the help of external energy completely, utilize the gravitational potential energy of water self to flow, save cost and energy, and the practicality has.
As shown in FIG. 1, the capacities of the first and second storage tanks 41 and 42 are set to V1、V2The irrigation quantity required in the irrigation period of the first farmland 51 and the second farmland 52 is W respectively1、W2The flow rates of the first open channel 61 and the second open channel 62 are q1And q is2And the irrigation time is t. When the water lifting amount of the step pump station 3 is less than the water demand of farmland irrigation, the water storage tank is required to supply the farmland irrigation, so that V exists1≥W1—q1t,V2≥W2—q2t; when the water lifting amount of the cascade pump station is larger than the actual water demand of farmland irrigation, the excess water amount can be temporarily stored in the regulating and storing water pool for use in the water shortage period.
At the peak of water use after six o 'clock in daytime, first water lifting pipeline 1 and second water lifting pipeline 2 open simultaneously, provide irrigation water and city domestic water jointly, and at the later peak of water use water flow direction of ten o' clock in evening, only open first water lifting pipeline 1 or second water lifting pipeline 2, provide city water and irrigation water by a water lifting pipeline, reduce the operating power of cascade pump, the rational distribution water resource.
A water storage adjusting method of a step pump station regulation water pool system is characterized in that pump stations are respectively arranged on two parallel water lifting pipelines at different elevation positions to form a plurality of step pump stations, a water storage water inlet, an open channel water inlet and corresponding electromagnetic valves are respectively arranged on the water lifting pipelines between adjacent step pump stations, the water storage water inlets are communicated with a same-stage reservoir through pipelines (the water inlet height of the same-stage reservoir is generally lower than that of the water storage water inlet, when the water inlet height of the same-stage reservoir is larger than that of the water storage water inlet, a water source of the water storage water inlet is lifted to the same-stage reservoir through an additional water pump), the same-stage reservoir conducts water to the same-stage farmland through the pipelines, and the open channel water inlets conduct water to the same-stage farmland; the topmost ends of the two parallel water lifting pipelines are communicated with the domestic water storage equipment; the method comprises the following steps that firstly, the water storage capacity of domestic water at lifting terminals of two parallel water lifting pipelines is met, a water storage device of the domestic water is provided with a full water warning line A, a high water level warning line B and a low water level warning line C, corresponding water level sensors are installed, water injection to the water storage device is stopped when the water level of the water storage device is above the line A, one or two water lifting pipelines are started to inject water to the water storage device at night when the lines AB are located, water injection is stopped in the daytime when the lines AB are located, two water lifting pipelines are started to inject water to the water storage device at night when the lines BC are located, one or two water lifting pipelines are started to inject water to the water storage device at daytime when the lines BC are located, and two water lifting pipelines are started to inject water; under the condition of meeting the water storage capacity of domestic water, the irrigation is carried out through the open channel at night, water is injected into the same-stage reservoir, water injection into the same-stage reservoir is stopped in the daytime, the same-stage reservoir is used for irrigating farmlands, and the open channel is used for matching with the irrigation when the irrigation is insufficient.
Example 2: the step pump station regulation and storage water pool system based on water balance in this embodiment is explained with different point centers from those in embodiment 1.
As shown in fig. 2, the water outlet end of the storage water tank is communicated with a plurality of farmlands through a plurality of branches respectively, the open channel is communicated with a plurality of farmlands through a plurality of branches respectively, taking a third farmland 53 as an example, the third farmland 53 is communicated with the water outlet end of the first storage water tank 51 through a branch pipe 7, the third farmland 53 is communicated with the first open channel through a branch open channel 8, and the capacity of the first storage water tank is set as V1The irrigation quantity required in the irrigation period of the first farmland 51 and the third farmland 53 is W respectively1、W3Flow rate distribution of first open channel 61 and branch pipe 7Is q otherwise1And q is3And the irrigation time is t. When the water lifting amount of the step pump station is smaller than the water demand of farmland irrigation, the water storage tank is required to supply the farmland irrigation, so that V exists1≥W1 +W3—q1t—q3t; has a capacity of V1When the water lifting amount of the cascade pump station is larger than the actual water demand of farm irrigation, the excess water amount can be temporarily stored in the regulating and storing water pool for use in the water shortage period.

Claims (3)

1. A water storage adjusting method of a step pump station regulation water pool system is characterized by comprising the following steps: the water-lifting device comprises two parallel water-lifting pipelines and multistage step pump stations arranged at intervals, wherein the two water-lifting pipelines jointly pass through each step pump station to form two parallel water-lifting lines, water in the water-lifting pipelines is pumped to a high water level from a low water level through each step pump station, the two water-lifting pipelines are respectively a first water-lifting pipeline and a second water-lifting pipeline, water-feeding valves for controlling the opening and closing of the water-lifting pipelines are respectively arranged on the first water-lifting pipeline and the second water-lifting pipeline, one of the first water-lifting pipeline and the second water-lifting pipeline is opened or is opened simultaneously, the first water-lifting pipeline is communicated with a first farmland through a first open channel to provide a first irrigation water channel for the first farmland, the second water-lifting pipeline is communicated with a second farmland through a second open channel to provide a first irrigation water channel for the second farmland, a regulation water pool is also arranged between the two adjacent step pump stations, and the water inlet end of the regulation water pool is communicated with the first water-lifting line, the water outlet end of the first regulation and storage water tank is communicated with the first farmland, and a second irrigation water channel is provided for the first farmland; the second irrigation waterway intermittently provides irrigation water for the first farmland; the water inlet end of a second regulation and storage water tank is communicated with a second water lifting line, the water outlet end of the second regulation and storage water tank is communicated with a second farmland, a second irrigation water path is provided for the second farmland, the second irrigation water path intermittently provides irrigation water for the second farmland, water storage valves are respectively installed at the water inlet end and the water outlet end of the regulation and storage water tank, whether the regulation and storage water tank supplies water for the farmland is controlled by controlling the water storage valves, the water lifting line is two parallel pressure pipes which sequentially pass through each stage of pump station, a plurality of water flow outlets are formed in the pressure pipes, and the water inlet end of each regulation and storage water tank are respectively communicated with the pressure pipes through the corresponding water flow outlets; the topography of each open channel is gradually reduced along the direction of self water flow, so that the water flow flows in the channels by means of self gravitational potential energy, the topography of the corresponding pressure pipe is higher than that of the regulating and storing water pool and is higher than that of a farmland on the same water flow path, water flows into the regulating and storing water pool with lower topography from an opening of the pressure pipe with higher topography, and finally, a water storage valve of the regulating and storing water pool is opened to enable the water to flow into the farmland with the lowest topography when irrigation is needed; pump stations are respectively arranged on two parallel water lifting pipelines at different elevation positions to form a plurality of step pump stations, a water storage water inlet, an open channel water inlet and corresponding electromagnetic valves are respectively arranged on the water lifting pipelines between adjacent step pump stations, the water storage water inlet is communicated with a reservoir at the same level through a pipeline, the reservoir at the same level is guided to a farmland at the same level through a pipeline, and the open channel water inlet guides a water source to the farmland at the same level through an open channel; the topmost ends of the two parallel water lifting pipelines are communicated with the domestic water storage equipment; the method comprises the following steps that firstly, the water storage capacity of domestic water at lifting terminals of two parallel water lifting pipelines is met, a water storage device of the domestic water is provided with a full water warning line A, a high water level warning line B and a low water level warning line C, corresponding water level sensors are installed, water injection to the water storage device is stopped when the water level of the water storage device is above the line A, one or two water lifting pipelines are started to inject water to the water storage device at night when the lines AB are located, water injection is stopped in the daytime when the lines AB are located, two water lifting pipelines are started to inject water to the water storage device at night when the lines BC are located, one or two water lifting pipelines are started to inject water to the water storage device at daytime when the lines BC are located, and two water lifting pipelines are started to inject water; under the condition of meeting the water storage capacity of domestic water, irrigating through the open channel at night, injecting water into the same-stage reservoir, stopping injecting water into the same-stage reservoir in the daytime, irrigating the farmland by using the same-stage reservoir, and irrigating by using the open channel in cooperation with the irrigation when the irrigation is insufficient; when the water consumption is high, the first water lifting pipeline and the second water lifting pipeline are simultaneously opened, and when the water consumption is low, only the first water lifting pipeline or the second water lifting pipeline is opened.
2. A method of regulating impoundment in a cascade pump station impoundment pond system in accordance with claim 1, wherein: the water outlet end of the regulation and storage pool is communicated with a plurality of farmlands through a plurality of branch flow pipes respectively, and the open channel is communicated with the plurality of farmlands through a plurality of branch open channels respectively.
3. A method of regulating impoundment in a cascade pump station impoundment pond system in accordance with claim 1, wherein: the topography of the open channel gradually decreases along the water flow direction.
CN201811392765.9A 2018-11-21 2018-11-21 Step pump station regulation pond system based on water balance Active CN109440874B (en)

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CN114411872B (en) * 2021-12-24 2023-11-07 江苏慧仁生态科技有限公司 Economical intelligent water flow distribution management method and system

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